EP0240989A2 - Méthode et système de contrôle d'affichage à multiécran - Google Patents

Méthode et système de contrôle d'affichage à multiécran Download PDF

Info

Publication number
EP0240989A2
EP0240989A2 EP87105133A EP87105133A EP0240989A2 EP 0240989 A2 EP0240989 A2 EP 0240989A2 EP 87105133 A EP87105133 A EP 87105133A EP 87105133 A EP87105133 A EP 87105133A EP 0240989 A2 EP0240989 A2 EP 0240989A2
Authority
EP
European Patent Office
Prior art keywords
display
data
screen
bit
directive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87105133A
Other languages
German (de)
English (en)
Other versions
EP0240989A3 (en
EP0240989B1 (fr
Inventor
Katsuya Takanashi
Kimitoshi Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0240989A2 publication Critical patent/EP0240989A2/fr
Publication of EP0240989A3 publication Critical patent/EP0240989A3/en
Application granted granted Critical
Publication of EP0240989B1 publication Critical patent/EP0240989B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports

Definitions

  • the present invention relates to United States Patent Application Serial No. 895,848 and European Patent Application No. 86,111,187.0, entitled "Display Control Method for Multi-window System” and applied by H. Iwami et al. on August 12, 1986.
  • the present invention relates to a display control apparatus and its method, and in particular to a display control system and its method suitable to the control of a multi-window system capable of displaying a plurality of windows overlapped on one screen.
  • Each of a plurality of windows in the multi-window display is provided with an order of its display on one screen.
  • a window provided with a higher order is displayed at the front side with respect to the operator, while a window provided with a lower order is displayed at depths.
  • a multi-window administration scheme as described in Japanese Patent Laid-Open No. JP-A-58-168142, for example, is known.
  • the function of carrying out display over a plurality of windows in parallel to the display of drawing elements or segments within the multi-window or the function of displaying at high speed the state of an object moving from a window to another window is not mentioned.
  • an object of the present invention is to provide a control system and a control method of overlapping multi-window display capable of rapidly moving drawing elements or segments over windows or displaying the movement locus of a drawing element between windows independently of the display control of respective windows.
  • Another object of the present invention is to provide a multi-window control system and its method capable of establishing logical planes used by an application program as display regions completely independent of overlapping multi-window display and capable of moving rapidly drawing elements without being conscious of collision between displays.
  • a further object of the present invention is to provide a multi-screen control capable of erasing rapidly the current display contents by the second display writing operation.
  • a further object of the present invention is to provide a display control system making it unnecessary to redevelop drawing elements or segments for moving rapidly drawing elements.
  • a logical plane which is independent of respective windows representing the multi-window display and which has the same size as that of the physical screen, and a buffer for holding a drawing element command supplied via exclusive OR gates on the logic plane.
  • the exclusive OR logic operation is carried out while the drawing element command held in the buffer is executed. Further, the exclusive OR logic operation is carried out while the drawing element command held in the above described buffer is carried out again.
  • the present logical plane operates independently of respective windows.
  • the drawing directive is supplied to the logical plane and a picture is drawn via the exclusive OR gate.
  • the drawing element can be moved at high speed.
  • Fig. la is a concept diagram for illustrating an embodiment of the present invention.
  • One or more logical display spaces 3a-l, 3a-2 and 3b (hereafter referred to as virtual screens) are assigned to each business content of application programs la and lb shown in Fig. la.
  • This virtual screen corresponds to a physical display screen for an application program in a conventional display control apparatus consisting of a single program and a single screen.
  • the operation for writing data from the application programs la and lb onto each display space and the operation for reading data from each display space to the business program la and lb are possible.
  • each virtual screen has an arbitrary size with respect to a real screen 6 (hereafter referred to a physical display screen).
  • each window is a rectangular region defined by specifying the position coordinates of the upper left corner point of the window and the length of the window in x and y directions.
  • each of these view ports is a rectangular region defined by specifying the position coordinates of the upper left corner point of the view port.
  • View ports can be defined so as to allow overlapping of a plurality of view ports. Accordingly, a view port belonging to a lower layer is displayed on the physical display screen 6 with a part thereof being missing.
  • a transfer data screen 77 is provided as a region of a logical plane for allowing it to freely draw a picture on the physical display screen 6 independently of the view ports 7a-l, 7a-2 and 7b corresponding to respective virtual screens 3a-l, 3a-2 and 3b.
  • a picture can be drawn at high speed on the physical display screen 6 via the exclusive OR operation independently of other view ports 7 by using the logic plane 77. The operation is shown in Fig. lb and will be described later in detail.
  • Fig. 2 is a block diagram for illustrating the configuration of an embodiment of a display control apparatus according to the present invention.
  • Each block represents a logic block circuit or a data buffer.
  • Each of application programs la and lb supplies definition of virtual screens 3a-l, 3a-2 and 3b, corresponding windows 4a-l, 4a-2 and 4b, and view ports 7a-1, 7a-2 and 7b to virtual terminal control sections 8a and 8b having memories corresponding to virtual screens.
  • graphic data such as characters, circles or linear lines, or external picture data inputted by the application program are written onto a virtual screen via the virtual terminal control section segment by segment.
  • the virtual screen is administrated by the virtual terminal control section.
  • the virtual terminal control section In order to administrate the details of segment data on the virtual screen, the virtual terminal control section generates information concerning respective segments in addition to the displayed data on the virtual screen as the data common to a real terminal control section 9.
  • the information generated includes attributes such as the position on the virtual screen, size, transparency/opacity and character space, classification of character/graphic/picture data, classification of solid line/broken line, and the display priority.
  • the real terminal control section 9 derives the information for defining the window 4 and the view port 7 defined by the business program 1.
  • the real terminal control section 9 generates a display screen administration table 10 which will be described later.
  • the real terminal control section 9 extracts the information required for developing on the physical display screen 6 out of the segment data on respective virtual screens 3 segment by segment. Depending upon which virtual screen 3 the drawing directive is destined for, the real terminal control section 9 generates an entry number for indicating the particular view port 7 on the basis of the rectangular region information on the administration table 10. On the basis of this entry number, a display order for each view port is indicated. Portions of view ports of lower ranks are lost due to overlapping.
  • the bit map processor control section 12 On the basis of the segment data and the entry number, the bit map processor control section 12 generates a command stream in a display screen buffer 13. The command stream directs a bit map processor to display which part of which view port on which part of the physical screen. At this time, the bit map processor control section 12 loads the character pattern corresponding to the character code contained in each segment of the character/graphic data onto the display screen buffer 13. For the physical display screen 6 of a full dot memory 23 developed on a CRT 15, the bit map processor control section 12 establishes a drawable region, i.e., a region on the physical display screen where a picture can be drawn, on the basis of the rectangular region information stored in the administration table 10. Thus the bit map processor control section 12 establishes a command in the display screen buffer 13.
  • a drawable region i.e., a region on the physical display screen where a picture can be drawn
  • the command includes the specification of the drawing position of the character/graphic/picture data in a two dimensional coordinate system having the upper left corner of the full dot memory 23 as the origin.
  • a command including the size, developing direction, and character code or pattern number of each character region is stored in the buffer 13.
  • a command including the vector command, shading pattern and marker pattern is stored in the buffer 13.
  • a command including the MH/MR compressed code data of CCITT and its rectangular region size is stored in the buffer 13.
  • the bit map processor 14 interpretes the command sequence contained in the buffer 13, judges whether the dots should be included in the drawable region when the character/graphic/picture data is developed into dots, and carries out clipping processing for leaving only the portions included in the drawable region.
  • An input device control section 19 traps as an interrupt the data input trigger supplied from physical input devices of a code input unit 16 such as a keyboard and a pointing device 17 such as a mouth.
  • the input device control section 19 sets the data set in a hardware register 18 into a code data input buffer 20 and a pointing data input buffer 21.
  • the input system is thus driven.
  • the contents of the code data input buffer 20 and the pointing data input buffer 21 are read out by the real terminal control section 9 and sorted there into input data to the application program 1 and data for directing the display screen control.
  • the real terminal control section 9 judges which is now the virtual screen 3 corresponding to the view port 7 located on the top layer of the display screen, and stores the pertinent input data into one of the virtual input data buffers 22a-l, 22a-2 and 22b administered by the virtual terminal control section 8 corresponding to the pertinent virtual screen 3.
  • This input data stored in the virtual input data buffer 22 is reported by the virtual terminal control section 8 to the application program 1 as the answer to the readout request sent from the application program 1 to the virtual terminal control section 8.
  • the application program 1 updates the contents of the virtual screen 3 in response to the pertinent input data.
  • the drawing elements of each segment 30 are specified from the relative position coordinates of either the upper left corner point or the lower left corner point of the segment in a two dimensional coordinate system having the upper left corner point of the screen 77 (preferably having the same size as the physical display screen 6 and) having the upper left corner point as the origin.
  • a command for generating the drawing element data within each segment 30 is held in a transfer data screen buffer 137 to draw a picture on the physical display screen 6 or move a picture at high speed by using the screen 77.
  • Figs. 5a and 5b show the contents of the display screen administration table 10 in the real terminal control section 9.
  • This administration table is mentioned in the United States Patent Application Serial No. 895,848 and the corresponding European Patent Application No. 86,111,187. 0.
  • the real terminal control section 9 sorts the information defining the view port 7 as a rectangular region on the physical display screen 6 into the x and y directions as the positional coordinates of respective sides of each rectangular region, and holds the information thus sorted together with the corresponding view port identifier (tables 10-1 and 10-2).
  • tables 10-1 and 10-2 When the x and y directions are seen independently between sets of two entries of tables 10-1 and 10-2 having consecutive entry values (such as entries 1 and 2, and entries 2 and 3), view port identifiers existing in the region range indicated by the two-valued entry are held (tables 10-3 and 10-4).
  • the view ports 7 are overlapped, as many view port identifiers as the overlaps are stored. Apart from that, the information representing the overlap priority of the view port 7 at that time is stored in a table 10-5.
  • a main table 10-6 of the current display screen administration table 10 is generated as follows.
  • the set of two consecutive values contained in the table 10-1 (such as entries 1 and 2, and entries 2 and 3) are selected as one body. If the corresponding entry of the table 10-3 singly holds only a view port identifier, all of the entries containing the same view port identifier among the entries of the table 10 - 4 are searched.
  • the corresponding y coordinates are derived from the table 10-2. If, in any case, the entries of the table 10-4 satisfying the search condition are consecutive, they are put together to derive the y coordinate.
  • Each entry of the table 10-6 represents a rectangular region on the physical display screen 6.
  • n (where n is an integer) virtual screens 3 can be simultaneously displayed on the physical display screen 6 by using the display screen administration table 10 described by referring to Figs. 5a and 5b and the real terminal control section 9.
  • the virtual terminal control section 8 is able to direct to draw a picture on an individual window 4 without being conscious of the mutual relation with other windows at all.
  • the real terminal control section 9 carries out alteration of the display state of the physical display screen such as alteration of the overlap order of the view ports 7 or the alteration of the size of the view ports 7 by referring to the administration table 10.
  • Fig. 4 shows the table configuration for administrating the drawing elements within the segment 30 directed to be drawn on the screen 77 of Fig. 3 by a command held in the transfer data screen buffer 137.
  • the bit map processor control section 12 assures an unused buffer portion within the transfer data screen buffer 137.
  • the contents of the requested drawing elements are copied from the input data buffer onto the unused buffer portion and are queued in a stream list 46.
  • This exclusive OR stream list 46 administers the buffer portions in use.
  • a command stream list 44 of the bit map processor 14 for administering the display screen buffer 13 has levels 1 to 4, for example, on the order of display priority.
  • command streams are roughly classified into drawing commands for windows 4 of respective virtual screens 3 and drawing commands for the transfer data screen 77.
  • the real terminal control section 9 issues a drawing command to the screen 77, it provides the top of the command stream for the bit map processor control section 12 with a transfer data screen identifier.
  • a virtual screen identifier or No. is provided.
  • the bit map processor control section 12 sorts the command stream into the transfer data screen buffer 137 or the display screen buffer 13 on the basis of the virtual screen identifier. The command stream is thus stored.
  • the bit map processor 14 carries out the exclusive OR stream list 46 surely once before or after it executes a processing request 42 of the command stream list 44 of the level 2 to 4.
  • One figure is prevented from being buried into another figure.
  • Fig. 6 is a flow chart of the real terminal control section 9 for realizing the transfer data screen, which has the same size as the physical screen and which is capable of displaying completely independently, on a multi-window. Processing carried out when a drawing directive is issued to the transfer data screen is shown in Fig. 6.
  • the drawing directive is issued to the real terminal control section 9 (step 600), it is judged on the basis of the identifier whether the directive is destined for a window which is a virtual terminal or destined for the transfer data screen (step 602). If the result is a request for the transfer data screen .77, a command of the segment or drawing element is additively stored in the exclusive OR stream list 46 (step 604). When the drawing element command has been executed by using the exclusive OR operation, a picture is drawn on the screen 77 (step 606).
  • the drawing directive command is stored into the buffer 22 of the virtual screen 3 (step 608).
  • the command within the exclusive OR stream list is executed (step 612).
  • the drawing element drawn on the screen is erased and the drawing directive command is executed (step 614).
  • a command in the exclusive OR stream list 46 is executed (step 616). Drawing on the window 4 is thus completed without disturbing drawing on the screen 77.
  • the drawing element command is simply executed (step 618).
  • the present embodiment makes it possible to establish a logical plane completely independently of multiple windows which can be overlapped and which are used as display regions by each business program. Without being conscious of collision of displays, therefore, the drawing element can be moved at high speed. Further, it becomes possible to represent the locus of the frame when the frame of the window is drawn on the transfer data screen and the size of the frame is gradually changed in display to the operator. It is also possible to represent the locus obtained when the drawing element is moved from the window to a different rectangular display region.
  • Fig. 7 shows the program for displaying the process of an image gradually moving between windows of virtual screens.
  • this program the appearance and disappearance of the image caused by writing data into the transfer data screen twice (703, 704) and appropriate movement of the image (704) are repeated.
EP87105133A 1986-04-09 1987-04-07 Méthode et système de contrôle d'affichage à multiécran Expired - Lifetime EP0240989B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61079919A JPH0766317B2 (ja) 1986-04-09 1986-04-09 表示制御方法
JP79919/86 1986-04-09

Publications (3)

Publication Number Publication Date
EP0240989A2 true EP0240989A2 (fr) 1987-10-14
EP0240989A3 EP0240989A3 (en) 1990-01-17
EP0240989B1 EP0240989B1 (fr) 1995-02-22

Family

ID=13703704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105133A Expired - Lifetime EP0240989B1 (fr) 1986-04-09 1987-04-07 Méthode et système de contrôle d'affichage à multiécran

Country Status (4)

Country Link
US (1) US4914607A (fr)
EP (1) EP0240989B1 (fr)
JP (1) JPH0766317B2 (fr)
DE (1) DE3751075T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431618A2 (fr) * 1989-12-06 1991-06-12 Kabushiki Kaisha Toshiba Méthode et dispositif d'affichage à fenêtres multiples ayant des moyens de manipulation de fenêtres améliorés

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2569072B2 (ja) * 1987-09-21 1997-01-08 株式会社日立製作所 マルチウインドウ・システムにおけるコマンド処理方法および装置
US5313227A (en) * 1988-04-15 1994-05-17 International Business Machines Corporation Graphic display system capable of cutting out partial images
US5117496A (en) * 1988-05-23 1992-05-26 Hewlett-Packard Company Method for recording and replaying mouse commands by recording the commands and the identities of elements affected by the commands
US5121478A (en) * 1988-09-08 1992-06-09 Xerox Corporation Window system with independently replaceable window functionality
US5025396A (en) * 1989-03-21 1991-06-18 International Business Machines Corporation Method and apparatus for merging a digitized image with an alphanumeric character string
US5353393A (en) * 1989-06-14 1994-10-04 Sunwest Trading Corporation Apparatus and method for manipulating scanned documents in a computer aided design system
JP3168570B2 (ja) * 1989-11-08 2001-05-21 富士通株式会社 アイコンパターン自動生成装置および方法
US5367680A (en) * 1990-02-13 1994-11-22 International Business Machines Corporation Rendering context manager for display adapters supporting multiple domains
JP2622011B2 (ja) * 1990-04-16 1997-06-18 三菱電機株式会社 画面切替方法
US5220646A (en) * 1990-04-30 1993-06-15 International Business Machines Corporation Single pass hidden line removal using z-buffers
US5283860A (en) * 1990-11-15 1994-02-01 International Business Machines Corporation System and method for displaying trimmed surfaces using bitplane masking
US5379215A (en) * 1991-02-25 1995-01-03 Douglas P. Kruhoeffer Method for creating a 3-D image of terrain and associated weather
US5448264A (en) * 1991-03-15 1995-09-05 Hewlett-Packard Company Method and apparatus for separate window clipping and display mode planes in a graphics frame buffer
US5592678A (en) * 1991-07-23 1997-01-07 International Business Machines Corporation Display adapter supporting priority based functions
US5233686A (en) * 1991-09-24 1993-08-03 Ceridian Corporation Open systems software backplane architecture for federated execution of independent application programs
US5396597A (en) * 1992-04-03 1995-03-07 International Business Machines Corporation System for transferring data between processors via dual buffers within system memory with first and second processors accessing system memory directly and indirectly
JPH0651738A (ja) * 1992-07-27 1994-02-25 Canon Inc コンピュータシステムの情報表示装置
US5305431A (en) * 1992-08-18 1994-04-19 International Business Machines Corporation Method and system for rendering polygons on a raster display
JP2583003B2 (ja) * 1992-09-11 1997-02-19 インターナショナル・ビジネス・マシーンズ・コーポレイション グラフィックス表示システムにおけるイメージ表示方法、フレーム・バッファ及びグラフィックス表示システム
CA2109681C (fr) * 1993-03-10 1998-08-25 Donald Edgar Blahut Methode et dispositif de codage et d'affichage avec transparence de fenetres superposees
US5638501A (en) 1993-05-10 1997-06-10 Apple Computer, Inc. Method and apparatus for displaying an overlay image
CA2162560A1 (fr) * 1993-05-10 1994-11-24 Shannon Holland Systeme de fenetrage a fenetres independantes a definitions quelconques pour l'affichage sur plusieurs dispositifs a definitions quelconques
US5487145A (en) * 1993-07-09 1996-01-23 Taligent, Inc. Method and apparatus for compositing display items which minimizes locked drawing areas
US5526481A (en) * 1993-07-26 1996-06-11 Dell Usa L.P. Display scrolling system for personal digital assistant
US5522020A (en) * 1993-09-14 1996-05-28 International Business Machines Corporation System and method for rapidly determining relative rectangle position
DE69323196T2 (de) * 1993-09-14 1999-09-09 Ibm Rechnersystem und Verfahren zur Ausführung von mehreren Aufgaben
US5522025A (en) * 1993-10-25 1996-05-28 Taligent, Inc. Object-oriented window area display system
JP3611593B2 (ja) * 1994-02-14 2005-01-19 日本オプネクスト株式会社 半導体光素子の作製方法
US5812112A (en) * 1996-03-27 1998-09-22 Fluke Corporation Method and system for building bit plane images in bit-mapped displays
US6052648A (en) * 1996-04-12 2000-04-18 Earthwatch Communications, Inc. Method and system for display of weather-related information
WO1997041547A1 (fr) * 1996-04-30 1997-11-06 Sony Electronics Inc. Procede et appareil de commande d'affichage
EP0896698A4 (fr) * 1996-04-30 2004-03-17 Sony Electronics Inc Interface d'utilisateur servant a naviguer dans des programmes, dans des fichiers et dans des donnees de systeme informatique, a organiser et a executer ce programme, ces fichiers et ces donnees
US5745109A (en) * 1996-04-30 1998-04-28 Sony Corporation Menu display interface with miniature windows corresponding to each page
US6002403A (en) * 1996-04-30 1999-12-14 Sony Corporation Graphical navigation control for selecting applications on visual walls
US6043818A (en) * 1996-04-30 2000-03-28 Sony Corporation Background image with a continuously rotating and functional 3D icon
US5983291A (en) * 1996-09-24 1999-11-09 Cirrus Logic, Inc. System for storing each of streams of data bits corresponding from a separator thereby allowing an input port accommodating plurality of data frame sub-functions concurrently
US5929868A (en) * 1996-09-27 1999-07-27 Apple Computer, Inc. Method and apparatus for computer display memory management
JPH10333631A (ja) * 1997-06-02 1998-12-18 Daichiyuu Denshi:Kk 拡張型表示装置および拡張型表示装置を用いた表示システム
EP1212744A4 (fr) * 1999-08-19 2006-06-14 Pure Depth Ltd Procede d'affichage pour ecrans multicouches
US7505046B1 (en) * 2000-05-02 2009-03-17 Adobe Systems Incorporated Preserving opaque-like rendering in transparent 2D graphics using knockout groups
US8002623B2 (en) * 2001-08-09 2011-08-23 Igt Methods and devices for displaying multiple game elements
US7909696B2 (en) 2001-08-09 2011-03-22 Igt Game interaction in 3-D gaming environments
US7367885B2 (en) * 2001-08-09 2008-05-06 Igt 3-D text in a gaming machine
US7901289B2 (en) * 2001-08-09 2011-03-08 Igt Transparent objects on a gaming machine
US8267767B2 (en) 2001-08-09 2012-09-18 Igt 3-D reels and 3-D wheels in a gaming machine
US6887157B2 (en) * 2001-08-09 2005-05-03 Igt Virtual cameras and 3-D gaming environments in a gaming machine
US9189467B1 (en) 2001-11-07 2015-11-17 Apple Inc. Method and apparatus for annotating an electronic document
US7918730B2 (en) * 2002-06-27 2011-04-05 Igt Trajectory-based 3-D games of chance for video gaming machines
US8384710B2 (en) * 2007-06-07 2013-02-26 Igt Displaying and using 3D graphics on multiple displays provided for gaming environments
JP4342578B2 (ja) * 2007-07-24 2009-10-14 株式会社エヌ・ティ・ティ・ドコモ 情報処理装置およびプログラム
US9092128B2 (en) 2010-05-21 2015-07-28 Apple Inc. Method and apparatus for managing visual information
KR20140142863A (ko) * 2013-06-05 2014-12-15 한국전자통신연구원 그래픽 편집기 제공 장치 및 그 방법
KR102449090B1 (ko) * 2018-03-05 2022-09-30 삼성전자주식회사 윈도우 버퍼의 할당을 관리하는 디스플레이 장치 및 그 디스플레이 장치의 제어 방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0095618A2 (fr) * 1982-05-31 1983-12-07 Kabushiki Kaisha Toshiba Système de mémoire
EP0145817A1 (fr) * 1983-12-19 1985-06-26 International Business Machines Corporation Système d'affichage de données

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168142A (ja) * 1982-03-30 1983-10-04 Fujitsu Ltd 多重画面管理方式
US4545070A (en) * 1982-04-30 1985-10-01 Fuji Electric Company, Ltd. Pattern discriminator
US4598384A (en) * 1983-04-22 1986-07-01 International Business Machines Corp. Graphics display with improved window organization
JPS6061794A (ja) * 1983-09-14 1985-04-09 シャープ株式会社 画面分割表示装置
US4542376A (en) * 1983-11-03 1985-09-17 Burroughs Corporation System for electronically displaying portions of several different images on a CRT screen through respective prioritized viewports
JPS60135989A (ja) * 1983-12-26 1985-07-19 株式会社日立製作所 表示領域マツピング方式
US4714918A (en) * 1984-04-30 1987-12-22 International Business Machines Corporation Window view control
JPS6118036A (ja) * 1984-07-04 1986-01-25 Nec Corp ドキユメント修正方式
JPS61190385A (ja) * 1985-02-20 1986-08-25 富士通株式会社 表示装置のマルチウインド表示方式
US4710767A (en) * 1985-07-19 1987-12-01 Sanders Associates, Inc. Method and apparatus for displaying multiple images in overlapping windows

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0095618A2 (fr) * 1982-05-31 1983-12-07 Kabushiki Kaisha Toshiba Système de mémoire
EP0145817A1 (fr) * 1983-12-19 1985-06-26 International Business Machines Corporation Système d'affichage de données

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
COMPUTER DESIGN, vol. 21, no. 6, June 1983, pages 54-60, Winchester, Massachussetts, US; "Graphics terminal uses bit-slice processor to offload host computer" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431618A2 (fr) * 1989-12-06 1991-06-12 Kabushiki Kaisha Toshiba Méthode et dispositif d'affichage à fenêtres multiples ayant des moyens de manipulation de fenêtres améliorés
EP0431618A3 (en) * 1989-12-06 1991-10-23 Kabushiki Kaisha Toshiba Method and apparatus for multiwindow display with enhanced window manipulation facilities
US5430838A (en) * 1989-12-06 1995-07-04 Kabushiki Kaisha Toshiba Method and apparatus for multi-window display with enhanced window manipulation facilities

Also Published As

Publication number Publication date
JPH0766317B2 (ja) 1995-07-19
JPS62237578A (ja) 1987-10-17
EP0240989A3 (en) 1990-01-17
US4914607A (en) 1990-04-03
DE3751075D1 (de) 1995-03-30
DE3751075T2 (de) 1995-08-31
EP0240989B1 (fr) 1995-02-22

Similar Documents

Publication Publication Date Title
US4914607A (en) Multi-screen display control system and its method
EP0121551B1 (fr) Generation dynamique et recouvrement de fenetres graphiques pour multiples zones actives d'implantation de programmes
US5347624A (en) Method and apparatus for display control
EP0249696B1 (fr) Système d'affichage à fenêtres multiples
EP0180902B1 (fr) Appareil pour l'affichage d'images
JPH0560144B2 (fr)
EP0403121A2 (fr) Production d'images animées par ordinateur
GB2059728A (en) Digital data display system
US6072506A (en) Method and apparatus for improved graphics picking using auxiliary buffer information
EP0147542B1 (fr) Système d'affichage à fenêtres multiples
CA1323450C (fr) Ecretage de tampon de profondeur pour la gestion des fenetres
US4748442A (en) Visual displaying
EP0162380B1 (fr) Système de tabulation
CA1229439A (fr) Systeme d'affichage de donnees
GB2059729A (en) Multicolour display of digitally processed data
EP0744730A2 (fr) Dispositif d'affichage avec fonction de masquage de caractères
Levy Vax station: A general-purpose raster graphics architecture
JP3078958B2 (ja) 三次元グラフィック表示装置
JPS6159484A (ja) セグメント制御方式
Angus Interactive graphics systems for CAE
JPS63217414A (ja) 図形表示制御方式
JPH03255520A (ja) ワークステーション装置
JPH02232784A (ja) クリッピング方法及びグラフィックシステム並びにワークステーション
JPS61153695A (ja) 文字表示制御方式
JPS58146982A (ja) 文書編集装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900119

17Q First examination report despatched

Effective date: 19920729

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3751075

Country of ref document: DE

Date of ref document: 19950330

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020219

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020328

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020628

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST